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{
"id": "k6",
"name": "Kessler Psychological Distress Scale (K6)",
"short_name": "K6",
"description": "A 6-item self-report measure of psychological distress designed to identify persons with serious mental illness. Used in epidemiological surveys worldwide.",
"url": "https://www.hcp.med.harvard.edu/ncs/k6_scales.php",
"reference": "Kessler, R. C., Andrews, G., Colpe, L. J., Hiripi, E., Mroczek, D. K., Normand, S. L., ... & Zaslavsky, A. M. (2002). Short screening scales to monitor population prevalences and trends in non-specific psychological distress. Psychological Medicine, 32(6), 959-976.",
"reference_url": "https://doi.org/10.1017/S0033291702006074",
"items_count": 6,
"domains": ["mental_health", "distress"],
"scoring": {
"method": "sum",
"range": [0, 24],
"interpretation": {
"0-4": "Low distress",
"5-12": "Moderate distress",
"13-24": "High distress (possible serious mental illness)"
}
},
"instructions": "During the past 30 days, about how often did you feel...",
"questions": [
{
"name": "k6_1",
"description": "...nervous?",
"annotation_type": "radio",
"labels": [
{"name": "none", "label": "None of the time"},
{"name": "little", "label": "A little of the time"},
{"name": "some", "label": "Some of the time"},
{"name": "most", "label": "Most of the time"},
{"name": "all", "label": "All of the time"}
],
"label_requirement": {"required": true}
},
{
"name": "k6_2",
"description": "...hopeless?",
"annotation_type": "radio",
"labels": [
{"name": "none", "label": "None of the time"},
{"name": "little", "label": "A little of the time"},
{"name": "some", "label": "Some of the time"},
{"name": "most", "label": "Most of the time"},
{"name": "all", "label": "All of the time"}
],
"label_requirement": {"required": true}
},
{
"name": "k6_3",
"description": "...restless or fidgety?",
"annotation_type": "radio",
"labels": [
{"name": "none", "label": "None of the time"},
{"name": "little", "label": "A little of the time"},
{"name": "some", "label": "Some of the time"},
{"name": "most", "label": "Most of the time"},
{"name": "all", "label": "All of the time"}
],
"label_requirement": {"required": true}
},
{
"name": "k6_4",
"description": "...so depressed that nothing could cheer you up?",
"annotation_type": "radio",
"labels": [
{"name": "none", "label": "None of the time"},
{"name": "little", "label": "A little of the time"},
{"name": "some", "label": "Some of the time"},
{"name": "most", "label": "Most of the time"},
{"name": "all", "label": "All of the time"}
],
"label_requirement": {"required": true}
},
{
"name": "k6_5",
"description": "...that everything was an effort?",
"annotation_type": "radio",
"labels": [
{"name": "none", "label": "None of the time"},
{"name": "little", "label": "A little of the time"},
{"name": "some", "label": "Some of the time"},
{"name": "most", "label": "Most of the time"},
{"name": "all", "label": "All of the time"}
],
"label_requirement": {"required": true}
},
{
"name": "k6_6",
"description": "...worthless?",
"annotation_type": "radio",
"labels": [
{"name": "none", "label": "None of the time"},
{"name": "little", "label": "A little of the time"},
{"name": "some", "label": "Some of the time"},
{"name": "most", "label": "Most of the time"},
{"name": "all", "label": "All of the time"}
],
"label_requirement": {"required": true}
}
]
}